Air cleaner



g DEC. U., 1934. Y J, MiKULASE-:rq 199836 ATR CLEANER Filed NOV, 50,1931 Paz/@afan Cil ' an offset lug or projection in which is PatentedDec. 11, 1934l PATENT OFFICE AIR CLEANER John Mikulasek, Newton, Iowa,

Maytag Company, Newton, Iowa,

of Delaware assignor to The a corporation Application' November 30,1931, Serial No. 577,877

2 Claims.

The invention relates to a novel air cleaner construction for acarburetor.

Among the objects of the invention is to provide an air cleaner for acarburetor which is adapted to be readily and easily attached anddetached for cleaning or replacement as the occasion may require.

A further object of the invention is the provision of novel coupling orattaching means for attaching the air cleaner to the carburetor, butpermitting removal thereof for the purpose of replacement or cleaning.The invention comprehends the provision of an air cleaner constructed tointerchange with cleaners now in commercial use and which were standardequipment on the carburetor as originally placed upon the market. In thedrawing, the carburetor shown is of a type used in connection with atwo-cycle internal combustion engine as disclosed more particularly inmy co-pending application Serial No. 395,518, led September 27, 1929,although it is to be understood that the present embodiment may beemployed in other constructions or uses wherever an eiiicient aircleaner is desired.

Another object is the provision of a novel means and method ofconnecting the coupling member to the body of the air cleaner.

A still further object of the invention is to provide the coupling orattaching collar with mounted an adjusting member or screw adapted todetachably connect the air cleaner to the carburetor.

Further objects are to provide a construction of maximum simplicity,efficiency, economy and ease of assembly, replacement, operation andmaintenance; and such further objects, advantages and capabilities aswill later more fully appear and as are inherently possessed thereby.

The invention further resides in the combination, construction andarrangements of parts illustrated in the accompanying drawing, and

while there is shown therein a preferred embodiment, it is to beunderstood that the samel -is susceptible of modification and change andcomprehends other details and constructions without departing from thespirit of the invention.

In the drawing:

Fig. 1 is a view in front elevation of a carburetor equipped with theimproved air cleaner.

Fig. 2 is a view, part in side elevation and part in vertical crosssection of the carburetor and air cleaner and disclosing more fully themeans for attaching the air cleaner.

Fig. 3 is a view in perspective of the clamp collar or coupling.

Fig. 4 is a fragmentary view, part in side elevation and part invertical cross section of an alternate form of collar or couplingmember.

Fig. 5 is a view in perspective of the collar or -coupling disclosed inFig. 4.

Fig. 6 is a view similar to Fig. 4 but disclosing a further alternateconstruction of attaching or clamping means.

Referring more particularly to the disclosure in the drawing, thecarburetor 10 is shown as comprising a housing 11 provided with a fuelintake tube 12 and a handle or throttle 13 of a valve for regulating theflow of fuel into the mixing chamber of the carburetor and thence intothe crank case of the engine. Adjacent the top' ofthe carburetor housing11 is an air intake port 14 leading to an air chamber 15. This inlet orintake port is providedwth an annular enlargement 16, the innerperiphery of which is slightly chamfered or beveled as at 17.

The air cleaner 18 for attachment to the carburetor comprises acylindrical body portion 19 of considerably greater cross section thanthe intake port of the carburetor. At its exterior, this body portion 10is provided with an outwardly flared flange 20 upon which is clinched aperforatedconvex face plate 21. At the other end of the cylindrical bodyportion 19 is provided a shoulder 22 adjacent which is seated aperforated false bottom 23, and intermediate the plates 23 and 21 areprovided spaced screens 24 and 25 and a mass of filtering material 26such as moss or the like. The screens 24 and 25 not only actas'lauxiliary filteringA means but retain the mass of ltering material26 which is housed therebetween. l

The filtering material may consist of moss or any other iibrous materialwhich does not vtend to readily compact and provide too great aresistance to the flow of air therethrough.

The interior or rear portion of the air cleaner is contracted as at 27and the end thereof is reduced to form a neck 28 adapted to be receivedwithin the annular enlargement 16. In order to retain the air cleanerrigidly in position yet permit ready assembly, detachment andreplacement thereof, the invention comprehends the provision of a clamp,collar or coupling -member 29 provided with a reduced annular neck 30and projecting ear or lug 31 having a tapped or threaded opening 32 forthe reception of a set screw 33. The neck of the collar 30 is chamferedon its inner edge as at 34.

In assembling the collar 29 upon the neck 28 of the air cleaner, thiscollar is slipped over the neck and rigidly secured in place byclinchingthe neck 28 thereto and expanding the inner edge into thechamfer 34 of the collar. If desired, the collar 29 and neck 28 of theair cleaner may be secured together byY spot welding.

In Figs. 4 and 5 is disclosed an alternate construction of clamp collaror coupling. In this form the reduced neck 35 of the air cleaner 18 isconnected to a clamp collar or coupling 36 by means of spot welding orthe like. This collar is not provided with a neck portion as is thecollar disclosed in Figs. 1 to 3 inclusive, but it is provided with anear or lug 37 having a threaded or tapped opening 38 for the receptionof a setl or thumb screw 39.

In Fig. 6 is provided a further alternate construction in which the aircleaner 18 is provided with a neck portion 35 similar to that shown inFig. 4, but instead of a clamp collar or coupling member, theconstruction comprehends the `provision of a threaded or tapped ear orlug 40 which is mounted o n or connected to the -body of the air cleanerin any suitable manner,

as by means of riveting or the like. As in the previously disclosedconstructions this form is provided with a. set or thumb screw 41which'is adapted to be screwed down upon the casing or housing 1l of thecarburetor whereby to prevent ready detachment of the air cleaner. It isto be noted that the set screw is not over the supported portion of theneck of the air v,cleaner but is set rearwardly therefrom or away fromthel body of the air cleaner. When the vset screw is tightened, theresulting diagonal force draws the inner connecting parts of the aircleaner and carburetor together whereby to provide a rigid and leakproof connection therebetween.

Although the drawing discloses but one ear and set screw for retainingthe air cleaner in position and under normal operating conditions, thisis suiiicient, nevertheless any number of ears and set screws may beprovided either diametrically opposed or otherwise spaced around theintake port. Y

From the above description and the disclosure in the drawing it will bereadily seen that the invention comprehends an eicient air cleanerconstruction which may be readily assembled, removed and/or replaced asdesired The construction permits the ready removal of the air cleanerfrom time to time as conditions require that the accumulated sediment inthe filtering material be removed as by washing or the like.

Having thus disclosed the invention,

I claim:

1. A coupling device for detachably coupling an air cleaner providedwith a constricted neck to a carburetor, comprising a coupling memberprovided with a portion encompassing the neck and conformably seatingwithin the air inlet of the carburetor; and a part offset from theencompassing portion `and extending exterior of said inletyand anattaching screw in said within the air inlet of the carburetor, an oisetrearwardly extending ear on said collar, and an adjustable set screw insaid ear and adapted to engage the body of said carburetor whereby todetachably retain the air cleaner in position on the carburetor butpermit its ready removal for the purpose of replacement or cleaning.

JOHN MIKULASEK.

